Skin care device

Abstract

A cradle holds a skin care device, the skin care device including a header for accommodating a medium fluid and having an emitting hole positioned on an emitting surface. The cradle can include a head seating portion, the header is inserted into the head seating portion, and a damper ring disposed around a side perimeter of the head seating portion and adhering closely to a perimeter of the header. The head seating portion can include a seating portion bottom surface facing the emitting hole of the header, and a seating portion side surface connected to a perimeter of the seating portion bottom surface.

What is claimed is: 
     
         1 . A cradle configured to hold a skin care device, wherein the skin care device includes a header configured to accommodate a medium fluid and the header has an emitting hole positioned on an emitting surface, the cradle comprising:
 a head seating portion configured to receive the header; and   a damper ring disposed around a side perimeter of the head seating portion, the damper ring being configured to attach to a perimeter of the header,   wherein the head seating portion includes:
 a seating portion bottom surface configured to face the emitting hole of the header; and 
 a seating portion side surface connected to a perimeter of the seating portion bottom surface, and 
   wherein the damper ring is configured to prevent evaporation of the medium fluid by covering a gap between the head seating portion and the header.   
     
     
         2 . The cradle of  claim 1 , wherein the damper ring includes a first damper ring configured to contact a perimeter of a surface on which the emitting hole of the header is formed,
 wherein the first damper ring includes an upper portion configured to contact the skin care device, and   wherein the upper portion is positioned a first distance away from the seating portion bottom surface.   
     
     
         3 . The cradle of  claim 2 , wherein the first damper ring comprises:
 a middle portion extending downward from the upper portion along an inside of the seating portion side surface; and   a lower portion interposed at a connecting portion between the seating portion bottom surface and the seating portion side surface.   
     
     
         4 . The cradle of  claim 2 , further comprising a sterilization lamp positioned on the seating portion bottom surface and configured to irradiate ultraviolet (UV) light at a first irradiation angle, and
 wherein a size of an irradiation diameter of the sterilization lamp at the first distance is greater than a size of an inner perimeter of the upper portion.   
     
     
         5 . The cradle of  claim 4 , wherein the first damper ring includes a middle portion tapered downward from the upper portion at an inclination angle, and
 wherein the inclination angle of the middle portion is smaller than the first irradiation angle of the sterilization lamp.   
     
     
         6 . The cradle of  claim 1 , wherein the header further includes a cartridge side surface having a slope that narrows towards the emitting surface,
 wherein the seating portion side surface narrows towards the seating portion bottom surface in accordance with the cartridge side surface, and   wherein the damper ring comprises a second damper ring in contact with the cartridge side surface.   
     
     
         7 . The cradle of  claim 6 , wherein the second damper ring has a curved surface protruding inwards and evenly contacts the header. 
     
     
         8 . The cradle of  claim 1 , further comprising:
 a base portion, wherein the head seating portion is positioned on a first side of the base portion;   a lower support portion positioned on a second side of the base portion; and   a power supply terminal positioned in the lower support portion, the power supply terminal configured to contact a charging terminal of the skin care device.   
     
     
         9 . The cradle of  claim 8 , wherein the seating portion bottom surface is not parallel to the base portion,
 wherein the power supply terminal is positioned on a first seating surface, and   wherein the first seating surface is perpendicular to the seating portion bottom surface.   
     
     
         10 . A skin care device, comprising:
 a main body;   an ultrasound cartridge positioned on one side of the main body; and   a cradle including:
 a head seating portion; and 
 a damper ring disposed around a perimeter of the head seating portion, the damper ring being positioned against a perimeter of the ultrasound cartridge, 
   wherein the ultrasound cartridge includes:   a cartridge body including:
 an emitting hole formed on an emitting surface; and 
 an internal cavity connected to the emitting hole; 
   a cover film covering the emitting hole;   a piezoelectric driver mounted in the internal cavity, the piezoelectric drive being configured to generate high-intensity focused ultrasound;   a piezoelectric ceramic configured to emit the high-intensity focused ultrasound toward the emitting hole of the cartridge body; and   an ultrasonic medium fluid accommodated in the internal cavity.   
     
     
         11 . The skin care device of  claim 10 , wherein the head seating portion comprises:
 a seating portion bottom surface facing the emitting hole of the cartridge body; and   a seating portion side surface connected to a perimeter of the seating portion bottom surface, wherein the damper ring is disposed inside the seating portion side surface.   
     
     
         12 . A skin care device, comprising:
 a main body including a cartridge seating portion; and   an ultrasound cartridge detachable from the cartridge seating portion, the ultrasound cartridge including:   a cartridge body including:
 an internal cavity; and 
 an emitting hole formed on an emitting surface; 
   a cover film covering the emitting hole;   a piezoelectric driver mounted in the internal cavity, the piezoelectric drive being configured to generate high-intensity focused ultrasound;   a piezoelectric ceramic configured to emit the high-intensity focused ultrasound toward the emitting hole of the cartridge body; and   an ultrasonic medium fluid accommodated in the internal cavity,   wherein the ultrasonic medium fluid is filled up to a position lower than a height of the piezoelectric ceramic, when the emitting hole is oriented upward.   
     
     
         13 . The skin care device of  claim 12 , wherein the ultrasound cartridge further includes:
 a waterproof ring fitted around a perimeter of the cartridge body, the waterproof ring including a protrusion having an outer perimeter protruding upwards; and   a cartridge cover inserted from a first side of the cartridge body on which the cover film is positioned,   wherein the cartridge cover includes a first step portion inside the cartridge cover, wherein a lower portion of the first step portion is drawn toward an outside thereof, and   wherein the protrusion of the waterproof ring is deformed by being pressed on a step surface of the first step portion to fill a space between the cartridge body and the cartridge cover.   
     
     
         14 . The skin care device of  claim 13 , wherein the cartridge body further includes a second step portion formed on an outer perimeter of the cartridge body, and
 wherein a cross section of the waterproof ring has an L-shaped lower side surface surrounding upper and side surfaces of the second step portion.   
     
     
         15 . The skin care device of  claim 13 , wherein the cover film covers the emitting surface of the cartridge body,
 wherein the cover film covers a side surface positioned around a perimeter of the emitting surface, and   wherein the first step portion is positioned below an end of the cover film.   
     
     
         16 . The skin care device of  claim 12 , further comprising a release button,
 wherein the cartridge seating portion includes:   a cartridge hook protruding from a first side, the cartridge hook being inserted inward based on a pressing of the release button; and   a first elastic fastening protrusion protruding from a second side opposite to the first side and being inserted based on pressurization.   
     
     
         17 . The skin care device of  claim 16 , wherein the cartridge seating portion further includes a pair of second elastic fastening protrusions,
 wherein the second elastic fastening protrusions are positioned between the first side and the second side,   wherein the second elastic fastening protrusions protrude symmetrically and are inserted based on pressurization, and   wherein each of the first elastic fastening protrusion and the second elastic fastening protrusion has a curved surface.   
     
     
         18 . The skin care device of  claim 17 , wherein each second elastic fastening protrusion is longer than each first elastic fastening protrusion, and
 wherein the pair of second elastic fastening protrusions include a pair of springs arranged in parallel along a length direction of the pair of second elastic fastening protrusions.   
     
     
         19 . The skin care device of  claim 12 , further comprising:
 a button hole formed on the main body;   a button bracket positioned inside the button hole, the button bracket including:
 a switch hole; and 
 a hook hole; and 
   a button top positioned in the button hole, the button top including:
 a button hook inserted and hooked into the hook hole; and 
 a tactile boss inserted into the switch hole. 
   
     
     
         20 . The skin care device of  claim 12 , further comprising:
 a gyroscope sensor provided on the main body, the gyroscope sensor being configured to measure an orientation of the main body; and   a controller configured to:
 calculate a surface level of the ultrasonic medium fluid within the cartridge body based on the orientation of the main body; and 
 limit driving of the piezoelectric driver when there is no ultrasonic medium fluid between the piezoelectric ceramic and the emitting hole of the cartridge body.